I didn't reveal anything that I should have kepttomyself.
我没有暴露出任何我应该守口如瓶的秘密。
2
I kepttomyself, stayed out of everyone's way, and never hurt a thing that was more sentient than an insect.
我总是孤身一人,远离其它人的世界,也从未伤害过任何东西,甚至像是小昆虫都没有。
3
Since UA is not a Chinese airline and most of its customers are non-Chinese, my culture-specific angst had to be kepttomyself in case it created trouble for her.